Figure 3. Modeled Salinity and Alexandrium concentration during
early April when downwelling-favorable wind conditions keep the
salinity and Alexandrium plumes trapped near the coast. In this
simulation Alexandrium cells were discharged continuously in the
Kennebec/Androscoggin river system at a concentration of 100 cells/liter.
As seen in the field data, the cell concentrations essentially track
the Androscoggin/Kennebec river plume. The cell concentrations are
relatively low due to cold spring water temperatures.